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Method for identifying iris based on zero crossing indication of wavelet transforms

A technology of wavelet transform and iris, applied in character and pattern recognition, computer components, instruments, etc., can solve problems such as difficult implementation and unclear method description

Inactive Publication Date: 2007-12-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0008] (3) The iris recognition method based on wavelet transform proposed by Boles: it effectively overcomes the problems that the former cannot solve such as image translation, rotation, and image scaling, and improves the recognition performance, but the specific method is not clearly described
[0009] The experiments of the above three methods are all verified by their own iris library, which is difficult to achieve under different other experimental conditions, and the method with the best recognition effect (1) Daugman method is based on high-quality images (very Small eyelid occlusion and deformation, high definition), it is difficult to fully use these methods without a standard iris library

Method used

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  • Method for identifying iris based on zero crossing indication of wavelet transforms
  • Method for identifying iris based on zero crossing indication of wavelet transforms
  • Method for identifying iris based on zero crossing indication of wavelet transforms

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Embodiment Construction

[0108] Adopt the method of the present invention, before the entrance of the airport and access control system, and any other suitable position adopts the iris image of the iris camera to collect the authenticator; secondly, the original image of the iris collected is imported as the original data into the program written in Matlab language Process in the software; finally get an iris recognition code of the authenticator.

[0109] A total of 108*7=756 CASIC 1.0 iris database images were used as the original data in the experiment, and 720 images were accurately located, with a positioning accuracy rate of 95.25%. It only takes 3-4s to locate an original iris image (under Matlab). The accuracy rate of image recognition that can be accurately located is 97.2%. In summary, using the method of the present invention can quickly and accurately realize the identification of the same iris and different irises.

[0110] Step 1. Acquire iris image:

[0111] Here is the already collec...

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Abstract

An iris identifying-method based on wavelet transform zero cross presentation includes carrying out binary state treatment on original image based on certain threshold to raise rough positioning precision of pupil, making double-threshold treatment based on external edge rough positioning of iris and carrying out intermediate value filtering to pick up general part of iris effectively, making quick and accurate rough positioning, accurately positioning external edge of iris by utilizing rough positioning result and using wavelet filter to carry out iris coding to effectively pick up information.

Description

technical field [0001] The invention belongs to the technical field of biological identification verification, in particular to the technical field of iris identification verification in the technical field of biological identification verification. Background technique [0002] In a highly informationized modern society, people's identification has penetrated into every aspect of daily life. At the same time, due to the rapid development of transportation, communication and network technology, the scope of human activities is increasing, and the difficulty and importance of identification are becoming more and more prominent. For a country with a large population like ours, identity authentication has particularly broad application prospects and important strategic significance. Finance, security, network, e-commerce, etc. all do not require reliable identity authentication. The traditional methods of identity authentication using passwords have disadvantages such as easy ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 解梅李栩荣
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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